Improvement in steam-engines



R. D. WRIGHT.

STEAM ENGINE.

'No. 41-,586. Patented Feb. 9, 1864.

THE NORRIS PETERS co WASHINGI'ON, n. c.

UlSIITED STArEs PATENT OFFICE.

ROBERT D. WRIGHT, on sr. LOUISQMISSOURI, ASSIGNOR TO HIMSELF AN] L'. B. HOLLAND.

IMPROVEMENT IN STEAM-ENGINES.

I Specification forming part of Letters Patent No. 4!,580, dated February 9, 1864.

To all whom it may concern Be it known that I, ROBERT D. WRIGHT, of the city and county of St. Louis and State of Missouri, have invented certain new and useful Improvements in Steam-Engines; and I do hereby declare that the following is afull and clear description thereof, reference being .had to the accompanying drawings, and to the letters of reference marked thereon, and made to form a part of this description.

The object of this invention is to simplify and cheapen the construction of steam-engines; and the nature thereof relates to the combination and arrangement of devices by means of which the cylinders of engines are made to reciprocate and thereby perform the duties of piston-rods, as hereinaftcr set forth and specii In reference to the drawings, Figure 1 is a perspective view-of my improvement as arranged for use. Fig. 2 is a plan or top view. Figs. 3 and 4 are vertical sectional elevations, and Fig. 5 isa bottom view of the cut-ofl valve.

All the working parts of this improvement will be constructed of suitable'materials, such as are usual indevices for like purposes, and with joints and fastenings common to steamengines in ordinary use.

A represents the steam cylinder; 0, the steam-chest; d, the exhaust-pipe; e, the cutoif valve; f, the rod, by means of which the valve e may be operated.

gg and h h are steam-pipes communicating with the steam-chest c, by means of passages i andwith the cylinder A by means of pipes in l is the piston-head, and m the pitman, through the medium of which machinery may be actuated.

Thepipesgg' may be screwedinto the steamchest 0 and also into the connecting-pipes k k,

I and the pipes h h may be screwed into the connecting-pipes kit and into the piston-head l, as represented, the said piston-head being thereby rigidly secured in a fixed position and the cylinder supported and provided with suitable bearings upon which to reciprocate.

The cylinder-heads p p being properly constructed with reference to their operation upon pipes hh,wil1 be provided with standards pp, which, in the operation of the engine, are

adapted at proper -times to come in contac' with lugs 1' r of rod f, by means of which thi valve e,' which is secured to said rod, will b4 actuated insuch manner as to admit etean alternately to the pipes g k h and y k h, anc' thereby operatethe'cylinder, as hereinafte set forth.

The valve e will' be made with a recess ir its-under side, as distinctly shown in Figs. 3. 4, and 5, so that when the said valve may be in position to admit steam to the pipe 9', as it Fig. 3, communication maybe opened between -the pipe 9 and the exhaust-pipe d by means of passage n, and vice versa, as seen in Fig. 4.

a: represents a pipe through which steam may be admitted to the steam-chest.

Thecylinder B and pipes b b": s v represent a pump or water-engine, the mechanical construction and arrangement ofwhich correspond precisely with the parts of the engine already described and represented by letters A qg k k h h it Z w, except that-thep-ipesb b communicate directly with the delivery-pipe o, andthat suitable suction pipes and valves (not shown) are provided, through which water may be supplied.

The water -cylin.der. B, together with the other working parts of the water-engine, may be made to operate conjointly with the cylinder A by means of suitable connections, as w, Figs. 1 and 2, so that the steain-engine before described, with the variations named, may be successfully employed as a feed-pump for the boilers used, or as a force-pump for other purposes.

By reference' to Figs. 3 and 4, the operation of my improvement may be distinctly understood without further description, it being seen that the pipes h h' are made with suitable openings, tt, through which the steam may enter the cylinder, and that in actuating the en ginethe steam takes the direction of theblack arrows, and after doing its work it es capes throughthe pipe d, as indicated by the red arrows. The lugs r r of the rod f will be properly arranged with reference to the stroke of the cylinder, so that the standards p 1) may come in contact with them at the proper periodsin the operation of the engine to givethe ,necessary and required motion to the valve 6.

I do not confine myself to the particular relative position of the cylinders A B, as I un aware that the same may be varied without vitiating the spirit of my invention. Neither 30 I wish .to confine myself to the precise con- ;truct-ion and arrangement of the lugs r r and and valve e, all being constructed and adjusted to operate substantially as herein described, for thepurposes set forth.

2. Operating pumps, constructed as herein described,- by means of reciprocating steamc-ylinders hayingdirect attachments to the waten-cylinders, and being thereby arrangedvto operate as and for the purposes set forth.

In testimony of which invention I have hereunto set my hand. and seal this 11th day of November, A. D. 1863.

ROBERT D. WRIGHT. [L. s.]

Witnesses:

EDWIN P. CAVITT, H. E. CLIFTON. 

